Temperature Converter
Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine instantly. Visual thermometer, conversion formulas, and common reference points — all free online.
Common Reference Points
About This Tool
- Real-time conversion as you type any value
- Conversion formulas displayed for each result
- Quick reference points for common temperatures
- Completely free with no registration required
Frequently Asked Questions
A temperature converter transforms temperature values between different scales like Celsius, Fahrenheit, Kelvin, and Rankine. It's essential for science, cooking, weather, and international communication.
To convert Celsius to Fahrenheit, multiply by 9/5 and add 32. The formula is: °F = °C × 9/5 + 32. For example, 100°C = 212°F (boiling point of water).
Kelvin is the SI unit of temperature used in science. It starts at absolute zero (-273.15°C), the lowest possible temperature. To convert: K = °C + 273.15.
Yes, completely free with no registration required. Convert between any supported temperature scales with no limits — all processing happens in your browser.